Seasonal variation of Zygochlamys patagonica muscular and gonadal indices in relation to energy reserves storage
Keywords:Zygochlamys patagonica, proximate composition, condition, reproduction, pectinids, energy reserves
Patagonian scallop (Zygochlamys patagonica) is a commercially important fishery resource in Argentina. The species has a seasonal variation in the weight of the adductor muscle and the gonad in relation to the breeding season. Spawning of Z. patagonica occurs from early Spring to early Fall. The energy used for the production of gametes would come from either recently eaten food or previously stored as biochemical reserves. In this paper, the variations of muscular and gonadal relative condition indices (ICRM and ICRG) in relation to the reproductive cycle and energy reserves are analyzed. The ICRG and ICRM show an inverse behaviour; the first increase in Winter and decrease in Summer. Glycogen, the muscle biochemical component that presents the largest variation throughout the year, registers the lowest percentages in Winter that increase towards Summer. This would indicate a transfer of glycogen from the callus to other parts of the body (gonad). Therefore, sexual cells maturation process would occur at the expense of the energy contributed by the adductor muscle.
How to Cite
Copyright (c) 2014 Silvana Campodónico, Griselda Garaffo
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
Authors of articles published in Marine and Fishery Sciences retain copyright on their articles, except for any third-party images and other materials added by Marine and Fishery Sciences, which are subject to copyright of their respective owners. Authors are therefore free to disseminate and re-publish their articles, subject to any requirements of third-party copyright owners and subject to the original publication being fully cited. Visitors may also download and forward articles subject to the citation requirements. The ability to copy, download, forward or otherwise distribute any materials is always subject to any copyright notices displayed. Copyright notices must be displayed prominently and may not be obliterated, deleted or hidden, totally or partially.
This journal offers authors an Open Access policy. Users are allowed to read, download, copy, distribute, print, search, or link to the full texts of the articles, or use them for any other legal purpose within the Creative Commons 4.0 license (BY-NC-SA), without asking prior permission from the publisher or the author. This is in accordance with the BOAI definition of Open Access.